Self-Leveling Topping Mortar Portland Cement-Based Polishable RAECO S.L.T.™ Self-Leveling SILPRO, LLC / 2 NEW ENGLAND WAY / AYER, MA 01432 -1514 / 800-343-1501 / 978-772-4444 / FAX 978-772-7456 / WWW.SILPRO.COM Silpro Raeco S.L.T.™ is a self‐leveling, structural grade, interior or exterior floor topping mortar containing Portland cement, graded aggregates, polymer and control additives. Mixed only with water, it becomes a free flowing material that achieves a flat and smooth surface. Raeco S.L.T.™ produces a smooth, hard and durable wearing surface or is ready to receive a finish floor. For a wearing surface a quality, high traffic sealer is recommended. Raeco S.L.T.™ is easily applied and offers an economical installation. The mortar can be applied from ¼ ” to 1 ½” in a single lift and up to any depth when mixed with aggregate. For thickness greater than 1 ½ inches, use ¼”‐ ⅜” pea gravel. Raeco R-2000™ primer is required prior to installation. Surface Preparation Continued Raeco S.L.T.™ is a non‐gypsum based product. For exterior applications, contact Silpro technical support. Mixing Test Data Compressive Strength: (ASTM C109) 1 day 7 days 28 days 2950 psi 4500 psi 6200 psi Tensile Strength: (ASTM C579) 28 days 750 psi Flexural Strength: (ASTM C580) 28 days 1050 psi Lineal Shrinkage: (ASTM C531) 28 days Less than ‐ 0.07% Wet Density: (ASTM C185) 117 Pounds per Cubic Foot Hardness: 60 Days Mohs Scale rating: 5.0 Shore ‘D’ Hardness: 85 Surface Preparation Surfaces to be covered must be structurally sound, clean and free of dust, oil, grease, sealers, curing compounds, laitance, release agents or other surface contaminants. Where possible, cut vertical shoulders at edges to accommodate repair or use foam tape (weather‐stripping) as a cold joint. For smooth existing concrete, we recommend mechanical abrasion to achieve an acceptable surface profile. A concrete surface profile (CSP) of 3 to 6 is recommended *See International Concrete Repair Institute for profile details at www.icri.org. Pour the diluted primer on the floor and sweep thoroughly to ensure that the surface is coated evenly without leaving puddles or bare spots. Seal all cracks, crevices and voids to prevent the Raeco S.L.T.™ from flowing outside your working area. Failure to remove all contaminants that impede the bonding agent may result in adhesion problems. For non‐porous substrates, such as ceramic tile, terrazzo, epoxy, metal and other impervious surfaces, use Raeco R-3000™ primer. Follow all directions contained in the product data sheets of Raeco R-2000™ and Raeco R-3000™ primers. Raeco S.L.T.™ Gray is mixed by adding clean water at a rate of approximately 5.5 to 5.8 quarts of water for each 50 lb. (22.7 kg) bag of dry powder. Do not exceed 5.8 quarts (5.4 liters) of water per 50 lb. (22.7 kg) bag. Raeco S.L.T.™ White use 5.8 to 6.1 quarts of water. Do not exceed 6.1 quarts of water (5.7). For Raeco S.L.T.™ Nike™ use 4.1 to 4.25 quarts of water. SPECIAL COATINGS CEMENT PATCH...... For Customer Service, Call Silpro at 1-800-343-1501 9 The cleaning and preparation method selected depends on both the sub‐floor material and its condition. Acid etching is not recommended. All surfaces to be leveled with Raeco S.L.T.™ must be double primed with Raeco R-2000™, including additional layers of Raeco S.L.T.™. Apply primer using a soft bristle brush, or exploded tip push broom. The water should be added to the mixing barrel first, then pour in the Raeco S.L.T.™, followed by the appropriate aggregate (if used). No other admixtures are to be used. (Plaster mixers or self‐leveling pump systems may be used for larger projects). Using a mixing paddle (an oval shaped type is recommended) with a high‐speed drill (600 to 1200 rpm), mix thoroughly (2 to 3 minutes) until the powder has been completely dispersed and the mix has acquired a smooth homogeneous texture. During the final minute of mixing, avoid plunging the mixing paddle and keep it submerged. This will decrease the entrained air content. For thickness over 1 ½” thick, ¼”‐⅜” pea gravel may be added after the Raeco S.L.T.™ been mixed thoroughly. The addition of the pea gravel will affect the flowability of the mix. It is recommended to mix only the amount of Raeco S.L.T.™ that can be applied within the 10 minute working time. Temperatures and material depth will effect working time. Because the mixed material is rapidly poured and spread, the application must be completed in a continuous operation. A pp l i c a t i o n Apply the Raeco S.L.T.™ mixture to the prepared surface, by using a gauged spreader tool that can be adjusted to the desired depth. Do not attempt to trowel the wet mortar. The use of a gauged spreader and smoother blade are recommended to improve the surface finish. Rubber or plastic‐cleated soccer shoes should be worn when working in fresh mortar. Raeco S.L.T.™ will self‐mend during the first 12 minutes at 70°F and will accept light foot traffic 2‐3 hours later. Under normal conditions, floors can be sealed or covered in 24 hours. When Raeco S.L.T.™ is to be applied on surfaces other than concrete (i.e., wood, metal, terrazzo, etc.), consult Silpro for recommended preparation, bonding, and application procedures. All floor adhesives compatible with normal concrete may be used with Raeco S.L.T.™. Temperatures in excess of 90°F, ambient or surface, can cause flash set and dehydration, resulting in cracking and debonding. Limitations Raeco S.L.T.™ should only be applied over substrates that are between 45° and 85°F. (7.2° and 29.4°C) Do not allow to freeze within 7 days of application. When applying Raeco S.L.T.™ to thickness greater than 1 ½” (35.8 mm), bulk the mix with the appropriate type and amount of aggregate (refer to Coverage Section), or apply in multiple layers. Caution! Raeco S.L.T.™ contains Portland cement and silica sand. May irritate eyes and skin. Avoid contact with eyes or prolonged contact with skin. In case of contact, flush thoroughly with water. The wearing of gloves and safety goggles is recommended. In case of eye contact, flood eyes with potable water and call physician. DO NOT RUB EYES. Do not take internally. Crystalline silica sand may cause serious lung problems. Avoid breathing dust and wear a respirator in dusty areas. Consult Material Safety Data Sheet for further information. Rely upon floor covering manufacturer for directions concerning maximum allowable moisture content of subfloor, adhesive selection and flatness tolerances. KEEP OUT OF THE REACH OF CHILDREN. DO NOT TAKE INTERNALLY. Dispose of in accordance with local, state, or federal regulations. In case of a medical emergency or for information regarding spillage clean up or disposal call INFOTRAC: 800-535-5053. Guarantee Please call Silpro LLC for copy of guarantee. Coverage 50 lb. (22.7kg) bag: 25 sq. ft. @ ¼” For Thickness over 1 ½” inch depth: 1 ½” & up use ¼”‐⅜” pea gravel @ 60 lb per bag 50 lb. (22.7kg) bag mixed with 60 lb. pea gravel yield 11 SF at 1” depth. 7/14 SILPRO, LLC / 2 NEW ENGLAND WAY / AYER, MA 01432 -1514 / 800-343-1501 / 978-772-4444 / FAX 978-772-7456 / WWW.SILPRO.COM
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